Enantiomeric Separations in Capillary Electrophoresis Using 18‐Crown‐6‐tetracarboxylic Acid (18C6H4) as Buffer Additive

Enantiomeric Separations in Capillary Electrophoresis Using 18‐Crown‐6‐tetracarboxylic Acid (18C6H4) as Buffer Additive
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使用 18-冠-6-四甲酸 (18C6H4) 作为缓冲添加剂的毛细管电泳中的对映体分离

DOI:
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发表时间:
1998
期刊:
影响因子:
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通讯作者:
P. Sandra
P. Sandra
中科院分区:
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文献类型:
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作者:
K. Verleysen;J. vanDijck;M. Schelfaut;P. Sandra

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综述了冠醚18-冠-6-四羧酸(18 C6 H4)作为缓冲添加剂在毛细管电泳(CE)中对映体分离的应用。手性选择剂18 C6 H4特别适用于分离具有伯氨基官能团的外消旋物。不幸的是,冠醚不再是市售的。因此,详细描述了合成和光谱表征。此外,还提出了冠醚CE后的再生方法。列举了NORLEU、ARG、GLU、m-TYR和o-TYR等氨基酸对映体的分离方法,并讨论了分离缓冲液的pH和温度对分离效果的影响。合成途径中的中间体,即18-冠-6-四甲酰胺,在CE中没有表现出任何对映选择性。
An overview is presented of the applicability of the crown ether 18-crown-6-tetracarboxylic acid (18C6H4) as buffer additive in capillary electrophoresis (CE) for the separation of enantiomers. The chiral selector 18C6H4 is particularly useful for the separation of racemates having a primary amino function. Unfortunately, the crown ether is no longer commercially available. The synthesis and spectroscopic characterization are therefore described in detail. Moreover, a method is presented for the regeneration of the crown ether after CE application. Some new enantiomeric separations of amino acids i.e. NORLEU, ARG, GLU, m-TYR, and o-TYR are listed and the influence of the pH and temperature of the separation buffer is discussed. An intermediate in the synthetic pathway, namely 18-crown-6-tetracarboxamide, did not exhibit any enantioselectivity in CE.
DOI: 10.1002/chir.530060609
发表时间: 1994-01-01
期刊: CHIRALITY
影响因子: 2
作者:
ARMSTRONG, DW;RUNDLETT, KL;CHEN, JR
通讯作者: CHEN, JR
DOI: 10.1021/ac00097a005
发表时间: 1995
影响因子: 7.4
作者:
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通讯作者: K. Gahm;A. Stalcup
DOI: 10.1021/ac00091a011
发表时间: 1994-10-01
影响因子: 7.4
作者:
STALCUP, AM;AGYEI, NM
通讯作者: AGYEI, NM
DOI: 10.1016/0021-9673(94)00875-a
发表时间: 1995-01-13
影响因子: 4.1
作者:
ARMSTRONG, DW;GASPER, MP;RUNDLETT, KL
通讯作者: RUNDLETT, KL